what is the methods is used for checking weld quality?
1. Radiographic 2 ultrasonic
3. Magenuc flaw
Welding of Structural Steel
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1 Pre-weld Inspection
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1 The surface to be welded and the filler material to be used shall
be subject to inspection by quality control personnel before
welding is performed.
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2 Method and Type
.1 All welding indicated on the contract drawings shall be
electric arc welding and shall comply in all respects with
the codes and specifications herein noted covering the
specifications for design, fabrication, and inspection of
welded structures and the qualifications of welders and
supervisors. The heat, input, length of weld, and sequence
weld and cooling process shall be controlled to prevent
distortions.
.2 For weldments comprised of plates in more than one plane
and whose configuration could cause restraint to uniform
cooling of the weldment, conform to detailed welding
procedures prepared by a welding expert.
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3 For weldments comprised of plates in more than one plane
and whose configuration could cause restraint to uniform
cooling of the weldment, conform to detailed welding
procedures prepared by a welding expert.
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4 For weldments comprised of plates thicker than 40 mm.
Take adequate.precaution to control welding and cooling
processes in order to control thermal shrinkage stresses.
Use stress relieving techniques where necessary. Each
welder shall mark his identification symbol on this work.
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